<!DOCTYPE html>
<html lang="zh">
<head>
    <meta charset="UTF-8">
    <title>11-文档画布的背景</title>
    <style>
        body {
            background-color: #f00;
        }

        div {
            background-color: #ff0;
            width: 100px;
        }

        div::first-line {
            background-color: #0f0;
        }

        div:hover {
            /*cursor: pointer;*/
            cursor: url("images/heart.gif") 10 10, pointer;
        }

        span {
            /*cursor: none;*/
        }
    </style>
</head>
<body>

<div>我是div我是div我是div我是div我是div我是div我是div我是div</div>

<input type="text">

<span>123123</span>

</body>
</html>